public void TestGetVariationForFeatureExperimentGivenNullExperimentIds() { var featureFlag = ProjectConfig.GetFeatureFlagFromKey("empty_feature"); var decision = DecisionService.GetVariationForFeatureExperiment(featureFlag, GenericUserId, new UserAttributes() { }); Assert.IsNull(decision); LoggerMock.Verify(l => l.Log(LogLevel.INFO, $"The feature flag \"{featureFlag.Key}\" is not used in any experiments.")); }